based on this below they asked to provide Use Case Traceability Matrix $($UCTM$)$ :

$2.)$ MVP domain's Use Cases with priority weight indicators $(1$ is highest; $7$is lowest$)$

UC$1(1)$: Search for books by title, author, or genre.$$

UC$2(2)$: Complete the checkout process for purchasing books.$$

UC$3(3)$: Create and manage user accounts.$$

UC$4(4)$: Display user reviews and ratings for each book.$$

UC$5(5)$: Add books to the shopping cart for easy checkout.$$

UC$6(6)$: Send confirmation emails after a successful purchase.$$

UC$7(7)$: Browse books by various categories $($e$.$g$.,$ genre, popularity, new releases$).$

UC$8(8)$: Reset passwords for users who forget their login credentials.$$